Uso De Biomassa De Microalga Para Biossorção De Lantanídeos

Heidelmann, Gisele Petronilho; Roldão, Tamine Martins; Egler, Sílvia Gonçalves; Nascimento, Marisa; Giese, Ellen Cristine

doi:10.15628/holos.2017.6436

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…Possivelmente, em soluções com pH menores que 7, o CaMoO 4 apresenta grupos com cargas superficiais líquidas positivas, o que causa repulsão dos cátions metálicos, acarretando baixa adsorção. Essa relação entre o pH e a carga superficial pode ser avaliada através da determinação do ponto de carga zero (PCZ) 48 , nesse ponto a carga superficial da amostra analisada é neutra.…”

Section: Resultsunclassified

Estudo do Potencial de Adsorção de Metais Tóxicos pelo CaMoO

et al. 2020

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O rápido desenvolvimento industrial e agrícola tem favorecido o aumento desenfreadono número de poluentes liberados no meio ambiente, principalmente, de metais tóxicosem água. Como consequência, faz-se necessário o desenvolvimento de novas tecnologiasde baixo custo, reprodutíveis e efiazes para a remoção desses contaminantes. Dentreessas tecnologias, a utilização de nanoadsorventes de óxidos metálicos vem recebendodestaque. Assim, o presente trabalho visa sintetizar o CaMoO4 utilizando radiação pormicro-ondas, caracterizar estruturalmente, morfologicamente e estudar o potencial deadsorção para íons Cd (II) e Mn (II). Observa-se que em pH 9, o material sintetizadoapresenta excelente potencial adsortivo para os íons cádmio (95%) e manganês (85%).

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Section: Resultsunclassified

Estudo do Potencial de Adsorção de Metais Tóxicos pelo CaMoO

et al. 2020

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“…1 × 10 −5 M). The pH was adjusted to 4.5 (at 20°C) to maintain the bioavailability of Sm +3 (Crémazy et al., 2013; Heidelmann et al., 2017). Four independent populations, two of CSm0 and two of CSm4, were inoculated with 2 × 10 6 cells in separate cell culture flasks of 500 mL with 200 mL of the medium.…”

Section: Methodsmentioning

confidence: 99%

Settling selection of Chlamydomonas reinhardtii for samarium uptake

Martinez‐Alesón García,

García‐Balboa,

López‐Rodas

et al. 2024

Journal of Phycology

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Samarium (Sm) is a rare‐earth element recently included in the list of critical elements due to its vital role in emerging new technologies. With an increasing demand for Sm, microbial bioremediation may provide a cost‐effective and a more ecologically responsible alternative to remove and recover Sm. We capitalized on a previously selected Chlamydomonas reinhardtii strain tolerant to Sm (1.33 × 10−4 M) and acidic pH and carried out settling selection to increase the Sm uptake performance. We observed a rapid response to selection in terms of cellular phenotype. Cellular size decreased and circularity increased in a stepwise manner with every cycle of selection. After four cycles of selection, the derived CSm4 strain was significantly smaller and was capable of sequestrating 41% more Sm per cell (1.7 × 10−05 ± 1.7 × 10−06 ng) and twice as much Sm in terms of wet biomass (4.0 ± 0.4 mg Sm · g−1) compared to the ancestral candidate strain. The majority (~70%) of the Sm was bioaccumulated intracellularly, near acidocalcisomes or autophagic vacuoles as per TEM‐EDX microanalyses. However, Sm analyses suggest a stronger response toward bioabsorption resulting from settling selection. Despite working with Sm and pH‐tolerant strains, we observed an effect on fitness and photosynthesis inhibition when the strains were grown with Sm. Our results clearly show that phenotypic selection, such as settling selection, can significantly enhance Sm uptake. Laboratory selection of microalgae for rare‐earth metal bioaccumulation and sorption can be a promising biotechnological approach.

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“…Microcystis spp. Biosorption Biosorption Biosorption Biosorption Biosorption batch, 10d, 35 °CC, 26 °CC batch, 10d, 35 °CC, 26 °CC batch, 10d, 35 °CC, 26 °CC batch, 10d, 35 °CC, 26 °CC batch, 4d, 28 °CC, pH8, 2000 lx Richards and Mullins ( 2013 ) Zhou et al ( 2004 ) La, Eu; Nd Chlorella vulgaris Biosorption Biosorption Biosorption Biosorption batch, 20 min, pH3 batch, 20 min, pH4, pH5 batch, 90 min, 21 °CC, 35 °CC, 50 °CC, pH5 batch, RT, 300 µmol/s/m 2 Heidelmann et al ( 2017 ) Ozaki et al ( 2003 ) Kücüker et al ( 2017 ) Tunali and Yenigun ( 2021 ) Er, Yb; La, Nd, Eu, Gd; Sm, Pr Sargassum sp. Biosorption Biosorption batch, 30–40 min, 20 °CC, pH5 batch, 20 °CC, 30 °CC, pH5 Palmieri et al ( 2001 ) Oliveira and Garcia ( 2009 ) Oliveira et al ( 2012 ) Oliveira et al ( 2011 ) La, Eu, Yb Sargassum polycystum Sargassum hemiphylum Schizymenia dubyi Biosorption Biosorption Biosorption batch, 1d, pH3, pH4.5 batch, 1d, pH3, pH4.5 batch, 1d, pH4 Diniz and Volesky ( 2005 , 2006 ) Kano ( 2013 ) La, Ce, Eu, Yb Turbinaria conoides Biosorption batch, 50 min, 6 h, pH4.9 Vijayaraghavan et al ( 2010 , 2011 ) La, Yb Ulva pertusa Biosorption batch, 1d, pH4 …”

Section: Algaementioning

confidence: 99%

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

Vítová,

Mezricky

2024

World J Microbiol Biotechnol

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Rare Earth Elements (REEs) are indispensable in contemporary technologies, influencing various aspects of our daily lives and environmental solutions. The escalating demand for REEs has led to increased exploitation, resulting in the generation of diverse REE-bearing solid and liquid wastes. Recognizing the potential of these wastes as secondary sources of REEs, researchers are exploring microbial solutions for their recovery. This mini review provides insights into the utilization of microorganisms, with a particular focus on microalgae, for recovering REEs from sources such as ores, electronic waste, and industrial effluents. The review outlines the principles and distinctions of bioleaching, biosorption, and bioaccumulation, offering a comparative analysis of their potential and limitations. Specific examples of microorganisms demonstrating efficacy in REE recovery are highlighted, accompanied by successful methods, including advanced techniques for enhancing microbial strains to achieve higher REE recovery. Moreover, the review explores the environmental implications of bio-recovery, discussing the potential of these methods to mitigate REE pollution. By emphasizing microalgae as promising biotechnological candidates for REE recovery, this mini review not only presents current advances but also illuminates prospects in sustainable REE resource management and environmental remediation.

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Uso De Biomassa De Microalga Para Biossorção De Lantanídeos

Cited by 8 publications

References 11 publications

Estudo do Potencial de Adsorção de Metais Tóxicos pelo CaMoO

Estudo do Potencial de Adsorção de Metais Tóxicos pelo CaMoO

Settling selection of Chlamydomonas reinhardtii for samarium uptake

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

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